10000420891 has 8 divisors (see below), whose sum is σ = 10139249120. Its totient is φ = 9861642432.

The previous prime is 10000420883. The next prime is 10000420897. The reversal of 10000420891 is 19802400001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10000420891 - 2³ = 10000420883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10000420897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597130 + ... + 613648.

It is an arithmetic number, because the mean of its divisors is an integer number (1267406140).

Almost surely, 2^10000420891 is an apocalyptic number.

10000420891 is a deficient number, since it is larger than the sum of its proper divisors (138828229).

10000420891 is an equidigital number, since it uses as much as digits as its factorization.

10000420891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24885.

The product of its (nonzero) digits is 576, while the sum is 25.

Adding to 10000420891 its reverse (19802400001), we get a palindrome (29802820892).

The spelling of 10000420891 in words is "ten billion, four hundred twenty thousand, eight hundred ninety-one".